gu

wine goblet with round base; Erlitou

jue

tripod cup with legs and spout 

Erlitou

fangjia

Gui

bowl with handles and round base

Erlingang

Jia

tripod with two posts

Erlingang

you

wine container with handle and round vase

Erlingang

zun

I

thin thread relief style

II

band of ornament that looks as if it had been crudely carved in the clay model before casting

III

more refined and accomplished; dense, fluent curvilinear designs that cover almost the whole surface of the vessel, found at Zhengzhou and Anyang

IV

the decoration (taotie, cicada, dragon, etc) is separated from the background of fine curling scrolls by being modeled in clear flat planes

V

main zoomorphic motifs rise in bold relief and the background spirals may disappear altogether